I need help determining my ducks breeds…

[SkySky]

So I bought two ducklings from TSC, I work there and when we get ducklings in they come all mixed together and we don’t get an identification card that tells their breeds…we can pretty much pick out the runners, mallards, Rouen, and blue Swedish just from their markings but it’s also never a guarantee. I’m pretty sure my brown duckling is going to be a khaki cambell because he/she doesn’t stand up when it runs, the bigger yellow one with a stripe on the head is the one I don’t know for sure. It’s got a stripe in the head a black stripe on her tail, a speckled bill and speckled feet…if someone could please help me identify them that would be awesome!

 

[fatty and friends]

they are both golden 300’s, they are probably the only domestic breed i don’t know very well so i may be wrong but i believe the color means they are female. i could be wrong though.